[FFmpeg-user] 4K Compression using x.265 issues

Kieran O Leary kieran.o.leary at gmail.com
Fri Nov 16 15:56:17 EET 2018

On Fri, 16 Nov 2018, 12:00 Ron Barnes <rbarnes at njdevils.net wrote:

> All,
> For some reason the below command is not working right.  I am unable to
> compress my movie by an significant amount.
> The input movie (MYMOVIE.Mkv) is just over 55GB and the resulting output
> is just over 53GB.
> I thought (and I am probably wrong) that by raising or lowering the -crf
> value would increase or decrease the size of my output file.  No matter
> what value I use, be it 18 or 28, the output file size is always the same.
> Can anyone determine where I'm going south in order to decrease the
> files's footprint (size) yet still preserve the movie quality

Yes,you are manually setting the bitrate with your  -b:v 10M command.
Remove that and try again.



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